KR20190129235A - Apparatus for water purifying to reduce the overflow turbidity from the sedimentation tank - Google Patents

Abstract

According to an embodiment of the present invention, water treatment equipment reducing effluent turbidity in the settling reservoir of a water purification plant to be 0.5 NTU or less includes: a tubular coagulant injector injecting a coagulant into incoming raw water; an admixture aggregation unit having two or more partition walls which have a vertical flow arrangement structure, where upper flow holes for passing raw water injected with the coagulant upwards and lower flow holes for passing raw water downwards are alternately positioned, including one or more aberration floc curators positioned so that the coagulant falling through the upper flow holes is positioned to be in contact with the injected raw water and one or more powered floc curators positioned within a space between the partition walls, and generating blend water by making raw water injected with the coagulant alternatively pass through the upper flow holes and the lower flow holes; a settling reservoir having an intermediate wall with a predetermined angle in the form of an open lower part, precipitating solids to the bottom by passing blend water including solids coming from the admixture aggregation unit through the lower part of the intermediate wall, and transferring only supernatant water in which solids have settled to filter paper by passing through the lower part of the intermediate wall; and the filter paper filtering supernatant water coming from the settling reservoir.

Description

Water Purification System to Reduce Water Treatment Turbidity Effluent Turbidity to Less Than 0.5 NTU {APPARATUS FOR WATER PURIFYING TO REDUCE THE OVERFLOW TURBIDITY FROM THE SEDIMENTATION TANK}

The present invention relates to a water treatment apparatus, and more particularly, to a water treatment apparatus for reducing the turbidity of the inlet turbidity filter paper.

The water treatment process generally includes mixing, flocculation, precipitation, filtration and disinfection processes. First, the flocculant is mixed with the incoming water to form a solid. And the solids formed or solids (sludge) is precipitated to lower the turbidity. In the filtration process, the inflow water in which the solid precipitates through the mixing, flocculation and precipitation processes is passed through the filter paper so that particles larger than the pores are sieved through the filter media to purify the inflow water. Existing water treatment facilities increase the mixing efficiency by using the rapid mixing method in which the mixing step proceeds from the fine particles to the larger particles several times, but when the low water temperature and low turbidity inflow, the turbidity of the influent entering the filter paper is 0.5 High turbidity appears above the NTU.

Automatic backwashing of the filtration process during the water purification process of the existing water treatment plant is the most difficult to control, and the sludge filtered in the continuous filtration process is stuck to the filter paper, causing a decrease in filtration performance. In particular, when the turbidity is higher than 0.5 NTU due to the high content of solids containing pin floc in the sedimentary overflow water flowing into the filter paper, the amount of foreign matter adhering to the filter paper also increases. To remove the solids trapped on the filter paper, back washing removes the sludge and other foreign matter that adhered to the filter paper. However, due to frequent backwashing, the filter bed of the filter paper takes a long time to stabilize, and even if the water pressure of the backwash pump is constant, the filter layer stabilization pattern is not constant every time, causing difficulties in operation.

Republic of Korea Patent Publication No. 10-1620794 relates to a purified water treatment device in which the purified water treatment process is variable according to the degree of pollution of the raw water, by specifying the water quality of the raw water to adjust the chemical and ozone injection amount and the weak cycle of the activated carbon, Improve efficiency. However, the patent only adjusts the injection amount and the cycle to improve the water quality of the raw water, and the existing water treatment device and treatment process is the same, so that the solids do not completely settle in the sedimentation basin does not sufficiently reduce the turbidity of the feed water flowing into the filter.

Republic of Korea Patent Publication No. 10-1620794 (2016.05.04)

The present invention has been made to solve the above problems, an object of the present invention is to reduce the turbidity of the water supply flowing into the filter paper by sedimentation and removal of the solid material of the mixed and agglomerated raw water during the sedimentation treatment process of the sludge sticking to the filter paper By reducing the amount, it is to provide a water treatment apparatus that can reduce the backwash cycle of the filter paper.

These and other objects and advantages of the present invention will become more apparent from the following description of preferred embodiments.

The object is composed of a tubular coagulant injection injector for injecting coagulant into the incoming raw water, two or more flocculation tanks, the partition wall of each tank through the upper flow hole and the raw water to pass the raw water injected with the coagulant to the top One or more aberration type flocculators and a bulkhead positioned within the space between the bulkhead and the agglomerate floc curator positioned alternately with the lower flow holes in contact with the injected raw water. A mixed flocculator comprising a powered flocculator, in which coagulant-injected raw water alternately passes through the upper flow hole and the lower flow hole to create a large floc that can be independently settled, and a predetermined angle in the form of an open bottom. Intermediate wall having a location is located, the inflow source containing the solid flowed from the mixed flocculation pond Pass the bottom of the middle wall to settle the solids to the bottom, and pass the bottom of the middle wall to set the floc layer formed in the lower part of the sedimentation tank to act as the filter media layer. A water treatment plant sedimentation effluent turbidity is reduced to 0.5 NTU or less, including a sedimentation basin delivered to the filter paper and a filter paper for filtering the supernatant water introduced from the sedimentation basin.

Preferably, the aberration-type floc curator is rotated by the raw water falling through the upper flow hole to agitate the raw water and the flocculating floc.

Preferably, the aberration-type flocculator and the power-type floccurator may be provided with spikes for crushing scum on the stirring blades.

Preferably, the tubular flocculant injection sprayer may be provided with four or more high-pressure jet nozzles to form a flocculant curtain wall therein by injecting a flocculant at a high pressure into the center of the tube.

Preferably, the sedimentation basin may further include a rubber scraper for scraping the solid accumulated on the wall of the intermediate wall from the top to the bottom.

Preferably, the sedimentary overflow wear is a floating structure whose height is controlled by the level of the sedimentation basin, it may further include a pontoon overflow wear to supply only the symbol water precipitated solids to the filter paper. At this time, the pontoon overflowware surrounds the overflowware waterway fixed to the overflowware waterway outer wall and the waterway wall for transmitting the symbolic water flowing into the filter paper to the filter paper, and is coupled to the groove digging processing portion formed perpendicular to the outer wall of the overflowware waterway. The floating structure may move up and down according to the level of the sedimentation basin, and the floating overflow plate may reduce the solids flowing into the overflowware by overflowing the symbolic water in which the sedimentation solids are deposited.

The water treatment apparatus according to the present invention may increase the filter backwash cycle by reducing the amount of solids accumulated in the filter paper by lowering the turbidity of the raw water flowing into the filter paper by improving the mixing, flocculation, and precipitation processes. As described above, the water treatment apparatus according to the present invention increases the number of backwashing cycles, thereby reducing the number of backwashing cycles, thereby increasing the treatment time of the purified water to enable stable purified water production and reducing the cost of backwashing.

However, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a block diagram showing an example of a water treatment apparatus for reducing the water purification plant sedimentation effluent turbidity according to an embodiment of the present invention to 0.5 NTU or less.
Figure 2a is a block diagram showing a tubular coagulant injection sprayer of the water treatment device for reducing the turbidity of the sewage effluent sewage turbidity water less than 0.5 NTU according to an embodiment of the present invention.
Figure 2b is a cross-sectional view of the tubular coagulant injection sprayer of the water treatment apparatus for reducing the turbidity of the sewage basin effluent turbidity water less than 0.5 NTU according to an embodiment of the present invention.
3A is a block diagram showing an aberration-type floc curator of a water treatment device for reducing the turbidity of the sewage effluent sewage water to 0.5 NTU or less according to an embodiment of the present invention.
Figure 3b is a block diagram showing a power-type floc curator of the water treatment plant for reducing the turbidity of the sewage effluent effluent turbidity water less than 0.5 NTU according to an embodiment of the present invention.
Figure 4 is a block diagram showing a rubber scraper of the water treatment apparatus for reducing the water purification plant sedimentation effluent turbidity according to an embodiment of the present invention to 0.5 NTU or less.
Figure 5 is a block diagram showing the pontoon overflow wear of the water treatment apparatus for reducing the turbidity of sewage effluent effluent turbidity water less than 0.5 NTU according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to embodiments and drawings of the present invention. These examples are only presented by way of example only to more specifically describe the present invention, it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples. .

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Like parts are designated by like reference numerals throughout the specification. When a part of a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the other part being "right over" but also another part in the middle. On the contrary, when a part is "just above" another part, there is no other part in the middle.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control. Also, although methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, suitable methods and materials are described herein.

1 is a block diagram showing an example of a water treatment apparatus for reducing the water purification plant sedimentation effluent turbidity according to an embodiment of the present invention to 0.5 NTU or less.

Referring to Figure 1, the water treatment apparatus for reducing the sewage turbidity effluent turbidity of less than 0.5 NTU according to an embodiment of the present invention is a tubular coagulant injection sprayer 100, mixed flocculation paper 200, sedimentation basin 300 and filter paper 400.

The tubular coagulant injection injector 100 injects the flocculant into the raw water flowing into the purified water treatment device. The flocculant is a drug that is added to the liquid in order to collect the solid particles suspended in the raw water to make a large lump, agglomerated foreign matter contained in the raw water through the flocculant to be precipitated in the sedimentation basin 300. At this time, the tubular coagulant injection injector 100 injects the coagulant using a high-pressure jet nozzle so that the injected coagulant is evenly mixed with the introduced raw water. The high pressure injection nozzle structure of the tubular coagulant injection sprayer 100 will be described in detail later with reference to FIG. 2.

The mixed condensed paper 200 includes two or more flocculation tanks, one or more upper flow holes 211, one or more lower flow holes 212, one or more aberration floc curators 230, and one or more powered floc curators 240. It includes.

In the mixed condensed paper 200, two or more partitions 221, 222, and 223 are formed, and a space between the two partitions corresponds to one floc forming tank. In the example of FIG. 1, three floc forming tanks formed by two or more partitions 221, 222, and 223 are illustrated.

Two or more partition walls of the mixed agglomeration paper 200 are alternately formed with an upper flow hole 211 through which raw water injected with coagulant passes and a lower flow hole 212 through which raw water injected with coagulant passes downward. That is, when the upper flow hole 211 is formed in the first partition 221, the lower flow hole 212 is formed in the second partition 222, and the upper flow hole 211 is formed in the third partition 213 again. This is formed, the raw water in which the flocculant is injected alternately passes through the upper flow hole 211 and the lower flow hole 212, and has a vertical flow arrangement structure that moves up and down. Through the vertical flow structure of the upper and lower flow holes by the upper flow hole 211 and the lower flow hole 212, the moving distance of the raw water in which the flocculant is injected is increased, thereby increasing the theoretical hydrodynamic residence time in the mixed flocculent 200. The aggregation efficiency rises.

The mixed condensed paper 200 includes one or more aberration type flocculators 230. The aberration-type flocculator 230 is located close to the lower portion of the upper flow hole 211 in the opposite direction in which raw water is introduced so that the coagulant passing through the upper flow hole 211 is contacted in the free fall process. The aberration-type floc curator 230 does not have a separate power source, and the raw water injected with the coagulant passing through the upper flow hole 211 is rotated by the free fall force and mixed so that the microflocs become the large flocks.

The mixed flocculant 200 includes one or more powered flocculators 240. The motorized flocculator 240 is located inside the mixed flocculation paper 200 to mix the raw water into which the flocculated water is injected to help generate a large floc. One of the powered flocculators 240 may be located between the partition walls, and two or more may be located between the partition walls according to the size of the mixed condensed paper 200 and the number of partition walls. The powered floc curator 240 rotates by a separate external power source, and mixes raw water into which a flocculant is injected.

As an example, the tubular coagulant injection sprayer 110 supplies raw water in which coagulant is injected into the lower portion of the mixed agglomerate 120, and the first partition 221 is formed with an upper flow hole 211 and a second partition wall ( 222 has a lower flow hole 212, the third partition 223 allows the upper flow hole 211 is formed and the upper flow hole 211 and the third partition wall 223 of the first partition 221. The aberration-type floc curator 230 is disposed in the upper flow hole 211 in the direction opposite to the inflow of raw water into which the condensed water is injected, and the first partition 221, the second partition 222, and the third partition 223 are disposed. Powered flocculators 240 are disposed in the lower portions of the spaces. In this case, the raw water supplied from the tubular coagulant injection sprayer 110 is mixed by the powered floc curator 240 and moves from the bottom to the upper direction and passes through the upper flow hole 211 of the first partition wall 221. The raw water falling freely after passing through the upper flow hole 211 of the first partition 221 falls and contacts the aberration-type floc curator 230 of the first partition 221 to contact the aberration-type floc curator 230. As you rotate, your enemies mix. Next, the raw water passing through the upper flow hole 211 of the first partition 221 passes through the lower flow hole 212 of the second partition 212 while being mixed by the powered floc curator 240. After moving from the lower part to the upper direction and passing through the upper flow hole 211 of the third partition wall 213, it is further mixed while falling to the aberration-type floc curator 230.

The above-described example illustrates a structure in which three partitions 221, 222, and 223 and two aberration type flocculators 230 are disposed, but the structure of the mixed condensed paper 200 is not limited to the above-described structure. The mixed condensed paper 200 can freely adjust the number of partition walls and the number of aberration type floc curators 230 according to the treatment capacity of the water treatment device, and also the number of the powered floc curators 240 disposed therein. Freely adjustable

The present invention improves the mixing efficiency by implementing the theoretical mathematical retention time through the up-and-down flow structure. In addition, by placing the non-powered aberration type floc curator 230 in the position where the raw water free fall by the upper flow hole 212 to increase the mixing efficiency of the raw water without additional power.

The mixed agglomeration paper 200 delivers the mixed water generated by mixing the raw water into which the flocculant is injected through the above-described process to the sedimentation basin 300. The mixed water generated by mixing in the mixed agglomeration paper 200 will include a solid material. In this case, the mixed agglomeration paper 200 may allow the mixed water to flow into the sedimentation basin 300 through the flow path 301 formed on the upper part of the sedimentation basin 300 so as not to affect the sludge deposited on the sedimentation basin 300.

The sedimentation basin 300 is a structure for lowering turbidity of raw water by precipitating solids of mixed water introduced from the mixed flocculent 200 to the bottom, and includes an intermediate barrier 310 and a pontoon overflowware 320.

The intermediate wall 310 is installed at a predetermined position in the sedimentation basin 300, and includes a lower opening hole 311 forming a flow path downward. The intermediate partition 310 may be installed such that the lower opening hole 311 is biased in a direction in which mixed water flows from the mixed condensed paper 200 and has a predetermined angle, and more specifically, may be installed at an angle of 15 degrees. As an example, the middle partition wall 310 may be installed at 3/5 of the sedimentation basin 300 from the mixed flocculation basin 200 from the inflow direction.

The zone into which mixed water flows out of the zone divided by the middle partition wall 310 of the sedimentation basin 300 corresponds to a zone A1 where solid matter contained in the mixed water precipitates to form a precipitation layer, and after the middle partition wall 310. This zone corresponds to the upflow sludge bed filtration zone (A2).

Solids are precipitated by gravity at the bottom of the settler 300 to form a sludge blanket 30. The thickness of the sludge blanket 30 is formed so that the lower opening hole 311 of the intermediate wall 310 is completely locked, so that the solids contained in the mixed water passing through the lower opening hole 311 can be more effectively deposited. have.

When the inflow water that has undergone the mixing and flocculation process in the mixed agglomeration site 200 is introduced through the upper flow path 301 of the sedimentation basin 300, the inflowed mixed water flows downward to open the lower opening hole 311 of the intermediate interlayer 310. Pass through). At this time, the solids of the mixed water sink down by gravity, and the solids are further precipitated by the sludge blanket 30 formed in the sedimentation basin 300 in the course of passing through the lower opening hole 311. That is, in the present invention, solids are deposited by gravity in the sedimentation basin 300 to become sludge and solids are more effectively deposited through the sludge blanket 30.

Pontoon overflowware 320 is located in the upstream sludge layer filtration zone (A2) of the sedimentation basin 300, a floating structure whose height is controlled by the water level of the sedimentation basin 300, solids are precipitated in the sedimentation basin 300 Only the removed symbol water is supplied to the filter paper 400.

The conventional general wearware is fixedly installed on the wall surface of the sedimentation basin 300. However, even if the level of the overflowware is correctly leveled at the construction stage, it is very difficult to construct the level so that the level of the overflowware is very difficult. Therefore, it is difficult for a general overflowware to have a completely same height compared to the surface of water at all locations, so that a relatively large amount of residual solids can be introduced in a large portion of the incoming water.

On the other hand, in the pontoon wall overflow wear 320 of the present invention, the floating moon plate of the pontoon structure (Pontoon) surrounding the overflow wear, the height of the floating moon plate is moved up and down automatically according to the water level. Therefore, the pontoon overflowware 320 automatically adjusts the height by the water level to maintain a constant overflowware load rate in the change of the inflow flow, and delivers only the symbol water having a relatively low turbidity to the filter paper 400. The pontoon wallware 320 will be described in detail later with reference to FIG. 5.

The filter paper 400 filters through the symbol water supplied by the Bontoon overflowware 320 of the settler 300. The water finally purified by the filter paper 400 may be supplied to various uses through tap water.

Purification treatment device for reducing the effluent turbidity of the water purification plant sedimentation basin according to an embodiment of the present invention to 0.5 NTU or less, evenly spraying the flocculant to the incoming raw water through the tubular coagulant injection injector 100 having a high-pressure injection nozzle structure, Through the up-and-down flow structure of 200, the aberration type flocculator 230 and the power flocculator 240, the flocculant is evenly mixed with the raw water. In addition, the deposition site 300 allows the mixed water mixed with the coagulant to pass through the sludge blanket 30 through the intermediate interlayer 310 having the lower opening hole 311 so that the solids are deposited more. In addition, only the symbol water of the sedimentation basin 300 is supplied to the filter paper 400 through the pontoon wallware 320. Through this, it is possible to minimize the amount of foreign matter accumulated in the filter paper 400 by minimizing the amount of solids or sludge included in the symbol water flowing into the filter paper 400.

Figure 2a is a block diagram showing a tubular coagulant injection sprayer of the water treatment device for reducing the turbidity of the sewage effluent sewage turbidity water less than 0.5 NTU according to an embodiment of the present invention.

Figure 2b is a cross-sectional view of the tubular coagulant injection sprayer of the water treatment apparatus for reducing the turbidity of the sewage basin effluent turbidity water less than 0.5 NTU according to an embodiment of the present invention.

1 and 2, the tubular coagulant injector 100 of the water treatment device for reducing the turbidity of the sewage effluent sewage turbidity water less than 0.5 NTU according to an embodiment of the present invention is two or more high pressure to inject the flocculant toward the central direction Injection nozzle 110. The high-pressure jet nozzle 110 is positioned to inject a coagulant from the outer wall of the tube toward the center to form a coagulant curtain wall 10 in the form of a curtain wall. The tubular coagulant injection sprayer 100 sprays the coagulant through the high pressure injection nozzle 110 to form a coagulant curtain wall 10 in the tube, so that the inflowing raw water passing through the tubular coagulant injection sprayer 100 is the coagulant curtain wall 10. ), Increasing the specific surface area of contact between the influent and the flocculant to increase the formation of fine solids. As an example, the tubular coagulant injection sprayer 100 is preferably provided with eight high-pressure jet nozzles 110 to form a coagulant curtain wall 10 in order to increase the contact efficiency of the coagulant.

3A is a block diagram showing an aberration-type floc curator of a water treatment device for reducing the turbidity of the sewage effluent sewage water to 0.5 NTU or less according to an embodiment of the present invention.

1 and 3A, the aberration-type floc curator 230 of the water treatment apparatus for reducing the water purification plant sedimentation basin effluent turbidity according to an embodiment of the present invention to 0.5 NTU or less is formed on the partition walls in the mixed condensed paper 200. In the opposite direction in which the raw water of the upper flow hole 211 is introduced, the coagulant falling lower than the upper flow hole 211 is positioned to rotate by the injected raw water. The aberration-type flocculator 230 does not have a separate power source, and mixes the solid particles and the flocculant in the raw water while rotating by the potential energy of the raw water into which the flocculant free-falling through the upper flow hole 211 is injected. .

The aberration type flocculator 230 may be formed in a shape in which the end of the stirring blade 231 is bent at a predetermined angle so as to increase the potential energy efficiency of the raw water into which the falling flocculant is injected.

In addition, a plurality of spikes 232 may be provided on the stirring blade 231. The spike 232 formed on the stirring blade 231 increases the surface area diffusion of the solids while the aberration-type floc curator 230 rotates, and prevents the generation of coherent scum. The spike 232 formed on the stirring blades 231 of the aberration-type flocculator 230 may be formed in various shapes according to needs and purposes, such as a cone shape, a blade shape, and a protrusion shape. In addition, the spike 232 formed on the stirring blade 231 of the aberration-type flocculator 230 can be freely adjusted the number according to the need and purpose.

Figure 3b is a block diagram showing a power-type floc curator of the water treatment plant for reducing the turbidity of the sewage effluent sewage water to 0.5 NTU or less according to an embodiment of the present invention.

1 and 3B, the powered floc curator 240 of the water treatment apparatus for reducing the water purification plant sedimentation effluent turbidity to 0.5 NTU or less according to an embodiment of the present invention is located inside the mixed condensed paper 200. . Preferably, the powered floc curator 240 may be located on the lower side of the mixed flocculation paper 200. The powered flocculator 240 is rotated by a separate power source, unlike the aberration floc curator 230. As an example, the powered flocculator 240 may use an electric motor as a power source.

The powered flocculator 240 may include a plurality of spikes 242 on the stirring blade 241. The spike 242 formed on the stirring blade 241 increases the surface area diffusion of the solid while the motorized floccurer 240 rotates and prevents the generation of coherent scum. Motorized flocculator 240 requires a separate power source, and because some or all of the operation is submerged in the water is subjected to a large resistance of the water. Therefore, the spike 242 formed on the stirring blade 241 of the powered flocculator 240 is preferably adjusted in shape and number in consideration of the resistance of the water.

Figure 4 is a block diagram showing a rubber scraper of the water treatment apparatus for reducing the water purification plant sedimentation effluent turbidity according to an embodiment of the present invention to 0.5 NTU or less.

1 and 4, the sedimentation basin 300 of the water treatment device for reducing the water purification plant sedimentation basin effluent turbidity according to an embodiment of the present invention to 0.5 NTU or less may further include a rubber scraper 330.

The rubber scraper 330 is located close to the intermediate wall 310 of the sedimentation basin 300, and scrapes off solids and other foreign matter deposited on the surface of the intermediate wall 310. For this purpose, the rubber scraper 330 includes a guide rail 331, a scraper blade 332, a scraper fixing member 333, and a scraper driver 334.

The guide rail 311 is fixedly positioned on the scraper fixing member 333, and moves the scraper blade 332 in the vertical direction, so that the scraper blade 332 scrapes the surface of the intermediate wall 310 and is deposited on the surface. Remove solids and other debris.

The scraper blade 332 is positioned on the guide rail 311 and moves vertically along the guide rail 311 to scrape off the surface of the intermediate wall 310 to remove solids and other foreign matter deposited on the surface. The scraper blade 332 may be an elastic material such as rubber to prevent damage to the surface of the intermediate wall 310.

The scraper driver 334 drives the scraper blade 332 located on the guide rail 311. The rubber scraper 330 operates in a predetermined cycle to scrape solids and other foreign matter deposited on the intermediate wall 310 to be deposited on the floor. In this case, the operation of the rubber scraper 330 may be repeatedly performed at a predetermined cycle, and may be freely performed by the user's needs.

Figure 5 is a block diagram showing the pontoon overflow wear of the water treatment apparatus for reducing the turbidity of sewage effluent effluent turbidity water less than 0.5 NTU according to an embodiment of the present invention.

1 and 5, the pontoon overflow wear 320 is located in the upstream sludge layer filtering zone (A2) of the sedimentation basin 300, a floating structure whose height is adjusted by the water level of the sedimentation basin 300, Only the supernatant water from which the solids on the settler 300 is removed is supplied to the filter paper 400. The pontoon overflowware 320 surrounds the overflowware waterway 321 and the overflowware waterway 321 for transmitting the symbolic water flowing into the filter paper to the filter paper, and move up and down according to the level of the sedimentation basin through a floating structure. And, the floating symbol plate 322 to flow to the upper portion overflowing the overflow wear channel 321 to the overflow.

The overflowware channel 321 has the same structure as the general overflowware, and transmits the symbol water of the sedimentation basin 300 overflowing to the filter paper 400.

The floating moon plate 322 has a pontoon structure, and is formed of a material and a structure that can float in water. And the floating moon plate 322 is installed in a structure surrounding the outer wall of the overflow wear channel 321. As an example, the floating moon current plate 322 is formed in the form of a flat front moon moon band, it may be formed to surround the upper portion of the groove according to the fixed overflow wear groove bottom and water level. The floating moon plate 322 is suspended in the sedimentation basin 300 without being fixed to the outer wall of the overflow wear channel 321. It moves up and down corresponding to the water level of the filtration zone A2 of the sedimentation basin 300. At this time, the floating degree of the floating moon plate 322 is adjusted from the bottom of the fixed moonware home by the pontoon plastic air ball from the top of the groove.

Since the common overflow wear is fixed to the wall by the overflow water of the sedimentation basin 300, it is very difficult to be constructed so that the horizontal is completely accurate. In addition, because it has a fixed height at all times, the amount of water overflowed by the amount of water flowing into the sedimentation basin 300 is not constant, so the pin flow is excessively overflowed due to the rising flow rate.

However, the pontoon overflowware 320 of the present invention always keeps the overflowware load of the sedimentation basin 300 while the floating overflow plate 322 surrounding the overflowware channel 321 automatically moves up and down in accordance with the water level. . More specifically, the pontoon overflow wear 320 is coupled to the vertical groove digging (groove picking) processing site formed in the overflow wear channel 321, the floating moon overflow plate 322 in the water level in the vertical direction (z-axis direction) It is possible to move correspondingly, and may have a structure to prevent the departure in the other direction. Through such a structure, the pontoon overflowware 320 of the present invention always flows only the same amount of water according to the water level and is supplied to the filter paper 400, thereby preventing the solids from entering the filter paper 400.

In addition, the floating moon plate 322 is not always limited to being installed integrally with the monthly wear channel 321, it may be installed in addition to the conventional monthly wear already installed. For example, when a rectangular or circular moonware is installed, the floating moonboard 322 may be manufactured according to the shape of the moonware to be freely applied to the moonware already installed by inserting it into a conventional moonware. .

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

100: tubular coagulant injection nozzle 110: high pressure injection nozzle
200: mixed flocculation site 211: upper flow hole
212: lower flow hole 221: first partition wall
222: second partition 223: third partition
230: aberration type floc curator 231: stirring blade
232: spikes
240: powered flocculator
300: sedimentation basin 301: flow path formed in the upper portion
310: middle partition 320: pontoon wallware
321: overflowware channel 322: floating moon plate

Claims (7)

A tubular coagulant injection injector for injecting coagulant into the introduced raw water;
Two or more barrier ribs are formed, and the two or more barrier ribs have an upper flow hole configured to alternately have an upper flow hole through which the raw water injected with the flocculant passes upward and a lower flow hole through which the raw water injected with the flocculant passed downward. And at least one aberration-type floccurator having a structure and positioned to contact the injected raw water falling through the upper flow hole, and at least one powered floccurator located inside the space between the partition walls; A mixed agglomeration paper for generating mixed water by allowing raw water injected with a coagulant to alternately pass through the upper flow hole and the lower flow hole;
An intermediate wall having a predetermined angle is located in the form of an open bottom, and mixed water including solids introduced from the mixed agglomerated paper is passed through the lower portion of the intermediate wall to settle the solids to the bottom and the lower portion of the intermediate wall. Sedimentation basin to pass only the symbol water through which the solid precipitated through the filter paper; And
A filter paper for filtering the supernatant water introduced from the settler;
Water treatment plant for reducing the water purification plant sedimentation effluent turbidity comprising less than 0.5 NTU. The method of claim 1,
And the aberration type floc curator reduces the turbidity of the effluent sedimentation basin effluent, which is rotated by the raw water into which the coagulant falling through the upper flow hole is injected, to stir the coagulant to 0.5 NTU or less. The method of claim 1,
The aberration type floc curator and the powered floc curator reduce water purification plant sedimentation basin effluent turbidity having a spike that breaks a scum on a stirring blade to 0.5 NTU or less. The method of claim 1,
The tubular flocculant injection sprayer is a water treatment device for reducing the effluent turbidity of the water treatment plant sedimentation basin effluent with two or more high-pressure injection nozzles to form a flocculant curtain wall therein by injecting a coagulant to the central portion of the tube to form a coagulant curtain wall. The method of claim 1,
And the sedimentation basin further comprises a rubber scraper for scraping the solids accumulated on the wall of the intermediate wall from the top to the bottom. The method of claim 1,
The sedimentation basin has a floating structure whose height is controlled by the level of the sedimentation basin, pontoon monthly wear to supply only the symbol water precipitated solids to the filter paper;
Water purification apparatus for reducing the water purification plant sedimentation effluent turbidity further comprises 0.5 NTU or less. The method of claim 6,
The pontoon monthly wear,
Overflow wear channel for delivering the symbol water flowing into the filter paper; And
It surrounds the overflowware channel, coupled to the groove processing site formed in the vertical direction on the outer wall of the overflowware channel and moved up and down according to the level of the sedimentation basin through a floating structure, the symbol water in which the solids of the sedimentation basin settle Floating overflow plate to flow into the overflow wear channel;
Water treatment plant for reducing the water purification plant sedimentation effluent turbidity comprising 0.5 NTU or less.

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